NEW MUFFLER RULE FOR USAC/CRA & WEST COAST SPRINT CARS
By Lance Jennings

FEBRUARY 15, 2018... Officials with the AMSOIL USAC/CRA and USAC West Coast Sprint Car Series have issued a list of approved mufflers for competition in 2018. The mufflers have been tested and will help meet the sound levels required at the racetracks on the schedule.

The Flowmaster “Suitcase” 53545-10 is legal for every racetrack and event on the USAC/CRA schedule. The “Suitcase” is the only muffler allowed at Petaluma and Watsonville, while recommended/preferred at Chico’s Silver Dollar Speedway.

For USAC West Coast, the new muffler rule will go into effect by the March 9th event at Tulare’s Merle Stone Chevrolet Thunderbowl Raceway.

For USAC/CRA, the new muffler rule will go into effect by the April 14th race at Tulare’s Merle Stone Chevrolet Thunderbowl Raceway.

The approved mufflers (with part numbers) are:

EXTREME: 6014-3535, 3615-3535

SCHOENFELD: 14272535, 14272735-78

FLOWMASTER: 53545-10, 13516100, 13516101

COAST FABRICATION: 350x625x17-2S

B&B: FRAC-0375S

SPINTECH: 1545P SUPER STOCK

The USAC West Coast and SouthWest Sprint Cars will clash at The Dirt Track at Las Vegas Motor Speedway (Las Vegas, Nevada) on February 28th and March 1st. The non-point “Outlaw Showdown” will pay $3,000-to-win each night. MUFFLERS ARE NOT REQUIRED AT LAS VEGAS.

The AMSOIL USAC/CRA Sprint Cars will battle at Perris Auto Speedway (Perris, California) on March 3rd at the annual “So Cal Showdown.”